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Subsequent Events (Details) - USD ($)
1 Months Ended 12 Months Ended
Feb. 24, 2022
Feb. 04, 2022
Feb. 28, 2022
May 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Subsequent Event [Line Items]                
Dividends declared (usd per share)         $ 6.83 $ 2.20 $ 1.20  
Authorized amount               $ 2,000,000,000
Loss on early extinguishment of debt       $ 23,000,000 $ 2,000,000 $ 27,000,000 $ 0  
West Texas Gas, Inc. | Sold                
Subsequent Event [Line Items]                
Equity method investment, ownership percentage         30.00%      
0.750% senior callable notes due 2024                
Subsequent Event [Line Items]                
Stated interest rate         0.75%      
4.450% senior notes due 2026                
Subsequent Event [Line Items]                
Stated interest rate         4.45%      
4.450% senior notes due 2026 | Forecast                
Subsequent Event [Line Items]                
Loss on early extinguishment of debt $ 50,000,000              
Subsequent event                
Subsequent Event [Line Items]                
Quarterly base dividend declared (usd per share)     $ 0.78          
Dividends declared (usd per share)     $ 3.00          
Authorized amount 4,000,000,000              
Remaining authorized amount $ 841,000,000              
Subsequent event | West Texas Gas, Inc. | Sold                
Subsequent Event [Line Items]                
Proceeds from sale of equity method investments     $ 126,000,000          
Equity method investment, realized gain (loss) on disposal     $ 0          
Subsequent event | 0.750% senior callable notes due 2024                
Subsequent Event [Line Items]                
Stated interest rate   0.75%            
Repayments of senior debt   $ 750,000,000            
Subsequent event | 4.450% senior notes due 2026                
Subsequent Event [Line Items]                
Stated interest rate   4.45%